Water and vacuum, yes…
Oatey Yellow Teflon Tape
- Thread starter Wamsutta
- Start date
yatg
Well-known member
"Thred Taper, The World’s Only Automatic PTFE Taping Machine"
www.thredtaper.com
Thred Taper | Automatic Teflon PTFE Tape Applicator Machine
Transform your operations. Thred Taper automatically applies PTFE tape to most fittings in 3 seconds. Save time, money & improve the quality of your work.
www.thredtaper.com
rust in the eye
Well-known member
If using a vacuum bleeder for brakes sealing the threads of the bleed screw prevents air from being sucked past the threads of the loosened bleeder. Coolant pipe nip Ls on many old engines too.
"Thred Taper, The World’s Only Automatic PTFE Taping Machine"
Thred Taper | Automatic Teflon PTFE Tape Applicator Machine
Transform your operations. Thred Taper automatically applies PTFE tape to most fittings in 3 seconds. Save time, money & improve the quality of your work.
This just looks like fun
Feels like a ultimate thrift store find or something
"
Yes, there is a world of difference between the garbage tape sold at the big box stores and the plumbing supply shops. Not even close. When I see some with that **** in their hand I grab it and throw it away.
I’ve been using this for years. Available at McMaster also.
Manufacturer of PTFE Thread Sealant Tape
PTFE Thread Sealant Tape - Made in the USA Thread Sealant Tape in a variety of densities for general purpose and difficult applications
www.tfcoinc.com
That’s a good idea if you want the tape to peel right off as you tighten the joint.
The proper way would be tape and then thread sealant.
mslim
Well-known member
When I used to shoot training videos in Atlanta for the Coca-Cola post-mix (soda machines like you see in fast food joints where the syrup is mixed with carbonated water at the dispenser nozzle) department, the head tech told me teflon tape was only there to lubricate the threads, not seal a fitting.
rlitman
Well-known member
I can't say I've ever had that happen. White tape is nowhere near strong enough to handle dope being applied on top of it, but goes over a proper (not over) application of dope just fine. If your dope is as tacky as Rectorseal 5, the tape sticks to it very well, and since Rectorseal 5 doesn't have any PTFE, adding tape does help lubricate the joint.
So much institutional knowledge gets passed on that is based on superstition and misinformation. That advice is wrong. The exception about single-use crush dry-seal threads (NPTF being one example) was mentioned above, and I'll add that since soda uses stainless steel (due to the corrosive acidity of the dissolved CO2), interference fit threads are not even possible there (that's something only done in brass, and is generally reserved for fuel connections).
So about 30 years of installing fire sprinklers that get tested to 200 psi and I was doing it wrong?
Who knew?
I worked with some sprinkler fitters that did it that way, but I always did dope and then tape but according to 308guru I was doing it wrong.
Many times we were dope and tape sprinkler heads and some of the pipe ******* ahead of time, and my thought was always dope then tape, At least the tape protects any sand from sticking to the dope.
I fixed my post, but dope over tape?I worked with some sprinkler fitters that did it that way, but I always did dope and then tape but according to 308guru I was doing it wrong.
Many times we were dope and tape sprinkler heads and some of the pipe ******* ahead of time, and my thought was always dope then tape, At least the tape protects any sand from sticking to the dope.
Really?
Why not?
Like I said above, almost 30 years of doing it that way and I never had any fire sprinkler pipe threads leak and I put in threaded pipe 6 inch pipe down to 1 inch pipe.
Seems like a mess. Maybe I've been misreading posts about using both for years
Personally I've always just used quality dope or quality tape and never really had an issue.
rlitman
Well-known member
I'm not a fan of runny dope, but if your dope is runny (natural peanut butter consistency), then I could see it working applied over a thick tape (still wouldn't try that over the white stuff that shreds with just a strong stare). Fresh Rectorseal 5 can be this runny, as can the blue **** (not a fan at all). I much prefer Rectorseal 5 after a few years of drying out in the can when it thickens to a non-dripping consistency. And even then, I'll often brush on a layer and then give it time to dry on the threads.
Also, if you have a PTFE infused dope (Rectorseal T plus 2 for example), then there's no point in adding tape to the mix.
dr_clyde
Well-known member
The pipefitters I worked with always used tape first, then dope over the the tape.
I wouldn't want to try to get tape tight enough to not slip over a doped pipe, but it is very straightforward to put a slick of dope over an already taped thread.
I wouldn't want to try to get tape tight enough to not slip over a doped pipe, but it is very straightforward to put a slick of dope over an already taped thread.
rlitman
Well-known member
Ahhh. I guess it's just different technique. I've always put my thumb on the end of the tape for the first turn, then roll my thumb off carefully so I don't peel up the end of the tape (this works for my purposes, but is completely unacceptable for oxygen service), and then once the tape is pinching itself, I'll tension as I wrap, so it pulls and puckers into the threads. A THIN film of dope under that helps me get the tape to stick to the pipe.
Rectorseal 5 is drippy like that when it's fresh. Keep the can well sealed and stir often.
KnurledNut
Well-known member
If I was a sprinkler fitter, I’d be using anaerobic pipe sealant with Teflon wherever possible, not tape and dope.
https://permabond.com/choosing-an-anaerobic-thread-sealant/
https://permabond.com/choosing-an-anaerobic-thread-sealant/
We would use what the company bought and paid for us to use.
It worked for my 30 years in the trade, it worked for my brother’s 39 years in the trade, and it worked for my uncles 44 years in the trade and it is still working to this day with my son and my brother‘s son still putting dope on and then tape just like I did.
I don’t know why some of you think it can’t be done or it has to be done only the way you think it should be done.
We tested the pipe to 200 psi for two hours and we tried to do it right the first time
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rlitman
Well-known member
Yes. Loctite 55. https://www.amazon.com/Loctite-Pipe-Sealing-Thread-Water/dp/B0010YLI0G?tag=atomicindus08-20
It makes tape completely obsolete.
Soft setting and non-setting dope are repair friendly. Tape is a mess when disassembling, but isn't too terrible to clean up. Setting dopes and anaerobics are very repair unfriendly. If I'm ever going to think about fixing it, I'm not using one of those.
In my neck of the woods, almost everything with fire sprinklers is done with roll-grooved fittings (or we. There's very little NPT to be seen, so all this is moot.
KnurledNut
Well-known member
The ones I posted are designed specifically for use in that industry with service and repair in mind.
Lots of old works out there to maintain.
Regardless, its still another option to consider for metal pipefitting that had not yet been mentioned in the thread.
Firebrick43
Well-known member
Mill rose has had the blue monster tape in yellow for years, the just called it “3 Wrap”. Recently they have rebranded it as the blue monster brand, our Menards already has it. It’s the best Teflon tape I have used. Both blue and yellow. We pair it with rector seal 5 or gasoila for propane tank NPT fittings that see 250psi without leaks. It’s also the 1/2” wide that is much cleaner but 3/8 would be better
I still prefer loctite 55 but I always forget to order it before running out and it’s not carried anywhere locally. Loctite 545 on hydraulic fitting as Teflon carries the risk of screwing up hydraulic spools, pumps, and valves.
Supply house Gas Tape
I still prefer loctite 55 but I always forget to order it before running out and it’s not carried anywhere locally. Loctite 545 on hydraulic fitting as Teflon carries the risk of screwing up hydraulic spools, pumps, and valves.
Supply house Gas Tape
Yes. Now you know though.
My fitting supplier recommended that for what we do/did (hot napthenic oil and high vacuum). So, I built an entire process skid counting on Gasoila as the sole sealant. Worked fine...for a few hours. Once it got hot I had leaks all over the place - and days of work to disassemble and rebuild using petrotape.
msharley
Well-known member
redwrench60
Well-known member
Yup. I’m a tape-and-dope guy too. Blue Monster tape and liberal amounts of Gasoila on top then wrench it together good and tight! Good for the life of the equipment.My go-to. This on top of some quality tape and there's never a problem.
KnurledNut
Well-known member
I hate being THAT GUY that's like "well actually" when someone tells a joke, but...With a top coat of Never Sieze!
This. Is the way!
...there actually is a never seez pipe dope. I'm just saying.
https://www.jdindustrialsupply.com/...=cse&msclkid=5133785878c516aaebd0125fc0390a85
msharley
Well-known member
Is procedure in one refinery I know of...for all their screw pipe needs....I hate being THAT GUY that's like "well actually" when someone tells a joke, but...
...there actually is a never seez pipe dope. I'm just saying.
https://www.jdindustrialsupply.com/...=cse&msclkid=5133785878c516aaebd0125fc0390a85
Junkman
Well-known member
That is exactly what Teflon is supposed to do. Make things slippery.
Beerhippie
Well-known member
Seems like that would be perfect for stainless steel piping and fittings. I'll have to source some.I hate being THAT GUY that's like "well actually" when someone tells a joke, but...
...there actually is a never seez pipe dope. I'm just saying.
https://www.jdindustrialsupply.com/...=cse&msclkid=5133785878c516aaebd0125fc0390a85